Im 14 years old. And i grind my teeth while asleep so i'm sure thats the reason my jaw is the way it is. Somtimes it cracks when i eat. I have an over bite. WHICH nedless to say i like better that a normal bite. I am looking into teeth gaurds for sleep time. Do you think i need surgery? There's no pain at all. Just little cracks in the jaw SOMTIMES when i eat.